Disk Partition Recovery

If a partition suddenly disappears (shows as Unallocated), becomes RAW, or you deleted the wrong volume by accident, stop using the drive and recover your files first. This guide explains the safest workflow and how to use Lazesoft Data Recovery Home Edition to scan and restore data.

Common signs you need partition recovery

• A drive letter is missing in File Explorer.
• Disk Management shows the space as Unallocated or the partition type as RAW.
• Windows asks you to format the disk when you plug it in.
• After an update, power loss, or crash, a previously working partition becomes inaccessible.

Why partitions “disappear”

A missing partition usually means the partition table or file system metadata was changed or damaged. Typical causes include:

• Accidental deletion in Disk Management / DiskPart.
• Power loss during write operations or firmware updates.
• Bad sectors affecting critical file system structures.
• Incorrect cloning / resizing (interrupted migration, wrong target selected).
• Malware or third‑party tools modifying partition information.

Best practices before you start

1. Stop using the affected drive immediately (no installs, downloads, or copy operations).
2. Recover to a different drive (never restore recovered files back onto the damaged partition).
3. If the partition is on the system drive (C:), use a bootable recovery disk so Windows doesn’t keep writing temporary data in the background.
4. If the disk is failing (clicking noises, frequent disconnects), consider cloning it first (sector-by-sector) and scan the clone instead.

Recover files with Lazesoft Data Recovery

Lazesoft Data Recovery Home Edition is designed for safe recovery workflows. It performs read‑only scanning and helps restore files from deleted, formatted, damaged, or missing partitions.

Scenario A: The partition still exists but you can’t open it

1. Install Lazesoft Data Recovery on a healthy drive (not the one you’re recovering from).
2. Launch the program and choose the appropriate recovery mode (for example Data Recovery / Deep Scan depending on your case).
3. Select the affected disk or partition and click Start Search.
4. Preview files if available, then select what you need and click Recover.
5. Choose a different destination (another internal disk or an external drive).

Scenario B: The partition is missing or shows as Unallocated

1. Run Lazesoft Data Recovery and select the Full Scan and then the entire physical disk that contained the missing partition.
2. Start a full scan to locate lost file system structures and previous partition data.
3. After the scan, browse found files/folders and recover them to a safe destination drive.

Scenario C: You need to recover from the system drive (C:)

If Windows cannot boot or the affected partition is the system drive, use another working PC to create a bootable recovery disk:

1. Install Lazesoft Data Recovery on a working computer.
2. Create a bootable recovery CD/USB.
3. Boot the problem PC from the created media.
4. Run Data Recovery and save recovered files to an external drive.

Helpful guides: Burn a bootable recovery CD | Create a bootable recovery USB | Boot from the recovery media

What makes a recovery attempt “safe”

• Read-only scanning: scanning should not modify the damaged source.
• No repair-first: always recover files before attempting repairs (format/CHKDSK/rebuild).
• Recover to another disk: prevents overwriting recoverable sectors.

FAQ

Should I run CHKDSK on a RAW / missing partition?

Not before recovery. CHKDSK can change file system metadata and may reduce the chances of getting clean results. Recover files first, then decide whether to repair or reformat.

Can I recover a deleted partition and get the drive letter back?

File recovery is the priority. After your data is safe, you can recreate partitions as needed. If you’re unsure, recover the files first and avoid writing to the disk until you’re done.

Does this work for USB drives and SD cards?

Yes—recovery workflows are similar for removable media (USB flash drives, SD cards, external HDD/SSD). Always recover to a different destination.